[nrf fromlist] tests: drivers: adc: Enable tests for nrf54h20 PPR.

Fill in necessary config files with test data.

Upstream PR #: 97109

Signed-off-by: Bartlomiej Buczek <[email protected]>

Author: nordic-babu

tests/drivers/adc/adc_accuracy_test/testcase.yaml

@@ -22,6 +22,7 @@ tests:
       - frdm_mcxc444
       - nrf52840dk/nrf52840
       - nrf54h20dk/nrf54h20/cpuapp
+      - nrf54h20dk/nrf54h20/cpuppr
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
       - ophelia4ev/nrf54l15/cpuapp

tests/drivers/adc/adc_error_cases/boards/nrf54h20dk_nrf54h20_common.dtsi

@@ -0,0 +1,11 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ */
+
+/ {
+	aliases {
+		adc = &adc;
+	};
+};

tests/drivers/adc/adc_error_cases/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -1,11 +1,7 @@
 /*
  * SPDX-License-Identifier: Apache-2.0
  *
- * Copyright (c) 2024 Nordic Semiconductor ASA
+ * Copyright (c) 2025 Nordic Semiconductor ASA
  */
 
-/ {
-	aliases {
-		adc = &adc;
-	};
-};
+#include "nrf54h20dk_nrf54h20_common.dtsi"

tests/drivers/adc/adc_error_cases/boards/nrf54h20dk_nrf54h20_cpuppr.overlay

@@ -0,0 +1,11 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ */
+
+#include "nrf54h20dk_nrf54h20_common.dtsi"
+
+&adc {
+	status = "okay";
+};

tests/drivers/adc/adc_error_cases/testcase.yaml

@@ -11,6 +11,7 @@ tests:
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
       - nrf54h20dk/nrf54h20/cpuapp
+      - nrf54h20dk/nrf54h20/cpuppr
       - ophelia4ev/nrf54l15/cpuapp
       - xg24_rb4187c
       - xg27_dk2602a